下载 Corel10k图像库Java代码

package PicDown; import java.io.BufferedReader; import java.io.DataInputStream; import java.io.File; import java.io.FileOutputStream; import java.io.FileReader; import java.io.IOException; import java.io.OutputStream; import java.net.URL; import java.util.ArrayList; import java.util.regex.Matcher; import java.util.regex.Pattern; import org.apache.commons.httpclient.HttpClient; import org.apache.commons.httpclient.HttpException; import org.apache.commons.httpclient.HttpStatus; import org.apache.commons.httpclient.NoHttpResponseException; import org.apache.commons.httpclient.methods.GetMethod; public class picdownAddress { /** * @param args 对固定格式的txt文档 ，找到图片 URL，然后下载该图片， */ static ArrayList<String> picUrlList=new ArrayList<String>(); public static void main(String[] args)throws HttpException, IOException { // 想下载 http://www.ci.gxnu.edu.cn/cbir/Corel/1.jpg 2.jpg...10000.jpg String picu="http://www.ci.gxnu.edu.cn/cbir/Corel/"; String address="D:\\ImgDataSet\\corel10k\\"; //保存图像路径 int num=10000; for(int i=1;i<=num;i++){ picUrlList.add(picu+i+".jpg"); } for(int j=0;j<num;j++){ System.out.println(picUrlList.get(j)); downloadPhoto(picUrlList.get(j),address,j+1); } } public static void downloadPhoto(String photoUrl,String photoadd,int picName) throws HttpException, IOException{ //下载图片 photoUrl 到 photoadd 地址中去， try{ HttpClient httpclient=new HttpClient();//需要导入HTTPClient包 GetMethod getMethod=new GetMethod(photoUrl); //System.out.println(photoUrl); // 打印出下载图片的地址 int statusCode=httpclient.executeMethod(getMethod); //只处理返回值为200的状态码，， if(statusCode==HttpStatus.SC_OK){ try{ //String tempString = getMethod.getResponseBodyAsString(); //tempString = new String(tempString.getBytes("ISO8859-1"), "gb2312"); URL requestUrl = new URL(photoUrl); DataInputStream dis = new DataInputStream(requestUrl.openStream()); OutputStream fos = new FileOutputStream(new File(photoadd+picName+".jpg")); byte[] buff = new byte[1024]; int len = -1; while((len = dis.read(buff))!=-1){ fos.write(buff, 0, len); } buff = null; fos.close(); dis.close(); System.out.println("下载图片完成！"+picName+".jpg"); }catch(Exception e){ System.out.println("downloadPhoto errors"); e.printStackTrace(); } } getMethod.releaseConnection();//释放 }catch(NoHttpResponseException e){ System.out.println("NoHttpResponseException"); e.printStackTrace(); } } // download() end }